#ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED

#define BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED

//

//  enable_shared_from_this.hpp

//

//  Copyright (c) 2002 Peter Dimov

//

// Distributed under the Boost Software License, Version 1.0. (See

// accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

//

//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html

//

#include <boost/weak_ptr.hpp>

#include <boost/shared_ptr.hpp>

#include <boost/assert.hpp>

#include <boost/config.hpp>

namespace boost

{

template<class T> class enable_shared_from_this

{

protected:

    enable_shared_from_this()

    {

    }

    enable_shared_from_this(enable_shared_from_this const &)

    {

    }

    enable_shared_from_this & operator=(enable_shared_from_this const &)

    {

        return *this;

    }

    ~enable_shared_from_this()

    {

    }

public:

    shared_ptr<T> shared_from_this()

    {

        shared_ptr<T> p(_internal_weak_this);

        BOOST_ASSERT(p.get() == this);

        return p;

    }

    shared_ptr<T const> shared_from_this() const

    {

        shared_ptr<T const> p(_internal_weak_this);

        BOOST_ASSERT(p.get() == this);

        return p;

    }

//  Note: No, you don't need to initialize _internal_weak_this

//

//  Please read the documentation, not the code

//

//  http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html

    typedef T _internal_element_type; // for bcc 5.5.1

    mutable weak_ptr<_internal_element_type> _internal_weak_this;

};

} // namespace boost

#endif  // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED